wireless wide area network ppt

... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level firewall. It cannot ... information about the network con- figuration. Authentication, especially of exter- nal BACnet users. Network Layer Attacks I-Am-Router- To -Network The I-Am-Router-To -Network message can ... traffic across the untrusted network (LAN/Internet). • As a router, separates the trusted network from the untrusted and thus can act as a BACnet firewall, performing network layer or application...

Ngày tải lên: 14/03/2014, 22:20

Ngày tải lên: 19/06/2014, 08:20

... 8-PSK – CDMA2000 1xRTT • Operates on two 1.25 MHz -wide frequency channels • Supports 144 Kbps packet data transmission 2 Objectives • Describe wireless wide area networks (WWANs) and how they are used • Describe ... 1xEVDO • For 2.5G CDMA2000 1xRTT networks 25 Binary Runtime Environment for Wireless (BREW) • BREW is a thin software environment – Very small program that resides on a wireless device • Capable ... (continued) • Short Message Services (SMS) – One of the most widely used applications – Allows for the delivery of short, text-based messages between wireless devices • Messages are limited to about 160...

Ngày tải lên: 13/09/2012, 10:52

Ngày tải lên: 01/09/2013, 10:30

... and Wide Area Networks OL-14760-01 Design Considerations • Use of EIGRP stub areas eliminates queries to spoke routers. • OSPF must periodically synchronize router databases within an area, ... generating link up/down SNMP traps and syslog messages for network management systems. 28 Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 Design Considerations Design Considerations This ... Edge Provider Edge Customer Edge (CE) User Network Interface (UNI) Customer Premise Equipment (CPE) 34 Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 Scalability Considerations Table...

Ngày tải lên: 21/12/2013, 06:15

Ngày tải lên: 04/04/2014, 07:36

Ngày tải lên: 19/06/2014, 10:20

Ngày tải lên: 21/06/2014, 01:20

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 16/07/2014, 21:13

Ngày tải lên: 01/08/2014, 07:21

... supports the storage area network (SAN) fabric and connectivity between servers and other storage devices, such as storage arrays and tape drives. Front End Network The front-end network contains ... 95134-1706 USA Enterprise Data Center Wide Area Application Services (WAAS) Design Guide This document offers guidelines and best practices for implementing Wide Area Application Services (WAAS) ... 11 Front End Network 12 Core Layer 13 Aggregation Layer 13 Access Layer 13 Back-End Network 14 SAN Core Layer 14 SAN Edge Layer 15 WAN Edge Component 15 19 Enterprise Data Center Wide Area...

Ngày tải lên: 10/12/2013, 16:16

... Chapter11 Wide Area Networking Protocols Introduction to Wide Area Networks WAN 是覆盖地理范围相对较为广阔的数据通信网络,它一般是利用公共载体(比如电信公司) 提供的设备进行传输.WAN 技术运行在 OSI 的最下 3 层 广域网 (Wide Area Network, WAN)的一些术语 ... 使用网络控制协议 (Network Control Protocol,NCP)来验证上层的 OSI 参考模型的网络层协议 6.异步传输模式(Asynchronous Transfer Mode,ATM):国际电信联盟电信标准委员会(ITU-T)制 定的信元(cell)中继续标准.ATM 使用固定长度的 53 字节长的信元方式进行传输,ATM 网络的 面向连接的 Cabling the Wide ... Mode,ATM):国际电信联盟电信标准委员会(ITU-T)制 定的信元(cell)中继续标准.ATM 使用固定长度的 53 字节长的信元方式进行传输,ATM 网络的 面向连接的 Cabling the Wide Area Network Cisco 的串行连接支持几乎所有类型的 WAN 服务.HDLC,PPP 和帧中继使用相同的物理层定 义的接口,但是和 ISDN 的不一样.我们先来回顾下 router...

Ngày tải lên: 21/12/2013, 05:18

... faceplate 6644 1 152-XX 2 outlet labeling areas and 2 individual port ID areas 4-port faceplate 6644 1 154-XX 2 outlet labeling areas and 4 individual port ID areas CopperTen ™ 4-port staggered ... TNSCSFPSO4-YY 2 Includes: 2 outlet labeling areas and 4 individual port ID areas. 6-port faceplate 6644 1 156-XX 2 outlet labeling areas and 6 individual port ID areas Dual-gang flush mount faceplates ... high, 2.572" to 3.866" (65.33mm to 98.2mm) wide Maximum thickness: 0.08" (2.03mm) 1 outlet labeling area, 4 individual port ID areas; includes 2 blank paper labels, 1 clear plastic...

Ngày tải lên: 24/01/2014, 15:20

Ngày tải lên: 18/02/2014, 04:20

Ngày tải lên: 21/06/2014, 17:20

Ngày tải lên: 21/06/2014, 23:20

... using SIR • Then they shift to FIR speed Wireless Communications Low Rate Wireless Personal Area Networks 2 Objectives • Describe a wireless personal area network (WPAN) • List the different WPAN ... work • Describe the security features of low-rate WPAN technology 3 What is a WPAN? • Wireless personal area network (WPAN) – Group of technologies that are designed for short- range communications – Eliminates ... devices • Include – Bluetooth – 802.15.4 (ZigBee) 12 Bluetooth Protocol Stack (continued) 14 Bluetooth Protocol Stack (continued) • Network topologies (continued) – Scatternet • Group of piconets in which connections exist between...

Ngày tải lên: 13/09/2012, 10:52